VLA325, Flange PN16 VLB325, Flange PN16 VLA335, Flange PN16 VLB335, Flange PN16
VLA325, Flange PN16 VLB325, Flange PN16 VLA335, Flange PN16 VLB335, Flange PN16

Control valve

VLA300, VLB300

Series VLA-VLB are 2-way and 3-way control valves with flange connection PN16 and higher flow rates, suitable for mixing and flow regulation up to 16 bar. The valves are made of high-performing nodular iron allowing use in heating and cooling installations. The VLA-VLB series is available in 2-way DN15-DN150 ; 3-way DN15-150 and comes with one type of connection. The valve is perfectly combined with ESBE actuators and controllers.
  • Superb regulation for best mixing and flow regulating performance up to 16 bar (PN16).
  • Real low internal leakrate and 100% tested product.
  • Long lasting and high durability.
  • Perfect match between the valve and ESBE actuators.

Product range

VLA325_335_425_VLB225_235 side_B-01
VLA325_VLB225 front_B-01
VLA325
VLB225 front_A-01
VLB325
VLA335_VLB235 front_RGB_B-01
VLA335
VLB235 front_A-01
VLB335
2-way Control valve series VLA325
Art.no.ReferenceDNKvs** Kvs-value in m3/h at a pressure drop of 1 bar.A mmB mmC mmD mmE mmF mmG mmH mmWeight kgNoteNTCNTC = National Trade Code
21200100VLA325151.6130421234x14203895652.1  
21200200VLA325152.5130421234x14203895652.1  
21200300VLA325154130421234x14203895652.1  
21200400VLA325206.3150441264x142041105752.6  
21200500VLA3252510160441314x142046115853.2  
21200600VLA3253216180581444x1920601401004.6  
21200700VLA3254025200601464x1920611501105.8  
21200800VLA3255038230741614x1920761651258.0  
2-way Control valve series VLB325
Art.no.ReferenceDNKvs** Kvs-value in m3/h at a pressure drop of 1 bar.A mmB mmC mmD mmE mmF mmG mmH mmWeight kgNoteNTCNTC = National Trade Code
21220100VLB32565632901751554x18259518514523.0Replaces 21203100, 21202100 
21220200VLB325801003101871658x184510520016030.0Replaces 21203200, 21202200 
21220300VLB3251001303502071768x1845116.522018045.6Replaces 21203300, 21202300 
21220400VLB3251252004002341998x184513925021055.0Replaces 21203400, 21202400 
21220500VLB3251503004802772178x224515728524071.0Replaces 21203500, 21202500 
3-way Control valve series VLA335
Art.no.ReferenceDNKvs** Kvs-value in m3/h at a pressure drop of 1 bar.A mmB mmC mmD mmE mmF mmG mmH mmWeight kgNoteNTCNTC = National Trade Code
21200900VLA335151.6130651234x14203895652.5  
21201000VLA335152.5130651234x14203895652.5  
21201100VLA335154130651234x14203895652.5  
21201200VLA335206.3150751264x142041105753.2  
21201300VLA3352510160801314x142046115853.8  
21201400VLA3353216180901444x1920601401006.6  
21201500VLA33540252001001464x1920611501107.5  
21201600VLA33550382301151614x19207616512510.0  
3-way Control valve series VLB335
Art.no.ReferenceDNKvs** Kvs-value in m3/h at a pressure drop of 1 bar.A mmB mmC mmD mmE mmF mmG mmH mmWeight kgNoteNTCNTC = National Trade Code
21221100VLB33565632901451554x18259518514519.0Replaces 21203600, 21202600 
21221200VLB335801003101551658x184510520016024.0Replaces 21203700, 21202700 
21221300VLB3351001303501751768x1845116.522018032.0Replaces 21203800, 21202800 
21221400VLB3351252004002001998x184513925021046.0Replaces 21203900, 21202900 
21221500VLB3351503004802402178x224515728524061.0Replaces 21204000, 21203000 

Installation support

Installation examples
2-way VLx
2-way Control Valves,
Installation without local circulating pump
2-way VLx
2-way Control Valves
Installation with local circulating pump
3-way VLx
3-way Control Valves,
Installation without local circulating pump
3-way VLx
3-way Control Valves,
Installation with local circulating pump
3-way VLx
3-way Control Valves,
Installation with local circulating pump
Installation instruction VLB325, VLB335

Technical data

Suitable application area
Recommended
  • Heating
  • Comfort Cooling
  • Solar heating
  • Ventilation
  • District Heating
  • District Cooling
Technical data
DN 15-50 Type: 2- and 3-way plug valve 
Pressure class: PN 16 
Flow characteristic A-AB: EQM 
Flow characteristic B-AB: Complementary 
Stroke: 20 mm
Rangeability Kv/Kv min: see graph 
Leakrate A-AB: Tight sealing 
Leakrate B-AB: Tight sealing 
∆P max: see graph 
Media temperature, max.: +130 °C
Media temperature, min.: -20 °C
Connection, Flange: ISO 7005-2 
DN 65-150 Type: 2- and 3-way plug valve 
Pressure class: PN 16 
Flow characteristic A-AB: EQM 
Flow characteristic B-AB: Linear 
Stroke, DN65: 25 mm
Stroke, DN80-150: 45 mm
Rangeability Kv/Kv min: >50 
Leakrate A-AB: 0.03% of Kvs 
Leakrate B-AB: 2% of Kvs 
∆P max, mixing: 200 kPa
∆P max, diverting: 70 kPa
Media temperature, max.: +150 °C
Media temperature, min.: -10 °C
Connection, Flange: ISO 7005-2 
Material DN 15-50 Body: Nodular iron, EN-JS 1030 
Stem: Stainless steel, SS 2346 
Plug: Brass, CW 602N 
Seat: Nodular iron, EN-JS 1030 
Blind plug: Brass, CW 602N 
Seat seal: EPDM 
Packing box seal: PTFE/EPDM 
Material DN 65-150 Body: Grey cast iron, EN-JL 1040 
Stem: Stainless steel, DIN 1.4305 
Plug: Brass CW617N 
Seat: Grey cast iron, EN-JL 1040 
Seat seal: Metallic 
Packing box seal: EPDM 
Conformity, DN 15-50: PED 2014/68/EU, article 4.3 
Conformity, DN 65-150: PED 2014/68/EU, Annex IV 
Valve characteristics 2-way control valves_GB_A-01
2-way valves, DN 15-50
. 2-way control valves DN65-150_GB_A-01
2-way valves, DN 65-150
. 3-way control valves_GB_A-01
3-way valves, DN 15-50
. 3-way control valves DN65-150_GB_A-01
3-way valves, DN 65-150
Dimensioning $name
Dimensioning guide - Please see data sheet

Accessories and spare parts

Adaptor kits
ImageArt.no.ReferenceDesignationNational trade codeNoteData sheetInstructions manual

VLA821

Adaptor kit Siemens SQX actuators.
26000700VLA821Siemens SQX actuators For valves DN 15-50. 
Spare parts
ImageArt.no.ReferenceDesignationNational trade codeNoteData sheetInstructions manual

VLA901

Exchange kit VLA901 Packing box.
27000100VLA901Exchange kit VLA901 Packing box Applies to valve type VLAxxx, VLExxx  

VLB901

Exchange kit VLB901 Packing box
27000700VLB901Exchange kit VLB901 Packing box Applies to valve type VLB1xx, VLB2xx  

VLB903

Exchange kit VLB903 Packing box
27000800VLB903Exchange kit VLB903 Packing box Applies to valve type VLB3xx  

Download area

Find here direct related product information for download. If you don’t find your specific need here please look further into below mentioned "Quick links" or this website's “Search” and “Support” area.
Data Sheet VLA300, VLB300
Installation instruction VLB325, VLB335
2D Image VLA325
2D Image VLB325
2D Image VLA335
2D Image VLB335
3D drawing (stp file) VLA325, DN15
3D drawing (stp file) VLA335, DN15
3D drawing (stp file) VLA325, DN20
3D drawing (stp file) VLA335, DN20
3D drawing (stp file) VLA325, DN25
3D drawing (stp file) VLA335, DN25
3D drawing (stp file) VLA325, DN32
3D drawing (stp file) VLA335, DN32
3D drawing (stp file) VLA325, DN40
3D drawing (stp file) VLA335, DN40
3D drawing (stp file) VLA325, DN50
3D drawing (stp file) VLA335, DN50

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Quick Links